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(No Model.)

WATCH DIAL.

No. 364,109. Patented May 31, 1887.

UNITED STATES PATENT OFFICEa GEORGE E. HART, OF WATERBURY, CONNECTICUT,ASSIGNOR ro THE WATERBURY WATCH COMPANY, OF SAME PLACE.

WATCH-DAL.

SPECIPICATION forming part of Letters Patent No. 364.109, dated May 31,1887.

Application filed Setcnber 6, 1886. Serial No. 212.832.

-To all whom it may concern:

Be it known that I, GEORGE E. I-IART, of Waterbury, in the county of NewHaven, and in the State of Connecticut, have invented certain new anduseful Improvements in \Vatch- Dials; and I do hereby declare that thefollowing isa full, clear, and exact description thereof, referencebeing had to the accomp`anying drawings, in which- Figure 1 is aperspective View of my dial and dial-plate before the Same are united.Figs. 2 and 3 are like views of opposite sides of the same whencombined. Fig. 4 is a perspective view of a watch-movement adapted toreceive said parts. Fig. 5 is a like view of the same after said dialand its plate have been placed in position, and Fig. 6 is a section uponline a' x of Fig. 5.

Letters of like name and kind refer to like parts in each of thefigures.

In the manufacture of watches 'it has heretofore been customary toemploy enameled dials which are manufactured as a specialty, and areeach provided with two or more rearward-projecting studs or feet thatpass into corresponding openingsin the front plate of a watchmovementand serve to secure the dial in place thereon; but in the fitting ofsuch dials to place material differenccs are -ordinarily found in thepositions of the feet with relation to each other and to the centralopening of the dial, and in such cases it becomes necessary to bend oneor all of the feet, in order that they may fit into their openings andthat the dial may be centrally located, the result being that frequentbreakagcs occur and the en'amel becomes' cracked at the point where afoot is secured to the metal base of the dial. Another difficulty arisesfrom the usual irregularity of the rear face of the dial, in consequenceof which the distance between the same and the movement-plates varies,so that the dial-wheels must be specially fitted to each dial, in orderthat they may have the necessary amount of endshake.

To obviate these difficulties is the design of my invention, whichconsists, principally, as a means for combining an enameled or porcelaindial with a watch-movement, in a metal plate which is cemented upon theback side of the dial and is fitted to and adapted to be se- (No model.)

cnred upon the movement-plate, substantially as and for the purposehereinafter specified It consists, further, as an improvement 1nwatches,in combining with an enameled or porcelain dial a metal platewhichis secured to or i to the front side of saiddial-plate,substantially as and for the purpose hereinafter set forth.

It consists, finally, as an improvement in watches, in the combinationof an enameled or porcelain dial, a metal plate which is secured uponits rear face, and a front movement-plate that is adaptedto receive saiddial-'plate and to i have the same attached thereto, substantially asand for the purpose hereinafter shown and described.

In the carrying of ny invention into practice I cmploy a dial, A, whichis preferably made by enameling with porcelain a disk of copper, but maybe entirely composed of porcelain, if desired. Said dial is made plainthat is, without the feet that are usually provided upon its rear face,but in other respects resembles the ordinary dial.

Cemented upon or secu red to the back of the dial A is a nctal plate, B,which, preferably, has a somewhat greater diameter, so that its edgeprojects beyond the edge of said dial, and has its outer face recessedto receive the latter, as shown. Said plate has a plain real.- face, andis fitted over and adapted to be in- ,posed upon the outer face of thefront move- -The dial-plate B is fitted to the movementplate O beforethe dial A is secured in place; but as the last-named operation in nonanner changes the form of said dial-plate the distance between itsinner face and the bottom of the recess c' for the dial-wheels remainsthe same, so that dial-wheels made therefor and having a predeterminedamount of end-shake will always fit to place without change.

The hollow arbors of the minute and hour wheels will of course projectto a grcater or less distance through the dial if the latter is thinneror thicker than the average; but such variations will be readilyconpensated by the hubs of the hands, which hubs have sufficient lengthto enable said hands to be adj usted lcngthwise of said hollow arbors asmuch as may be required in order to insure the proper position of theformer with relation to the face of said dial, precisely as would bc thecase were a dial of ordinary Construction used. This Construction alsoenables the dial to be readil y located so as to bring its axial openinginto an absolutely central position-an operation which is very difficultwith the ordinary form of dial.

Having thus described my invcntion, what I claim is-=- 1. As a means foreombining a vitrified, cnamcled, or porcelain dial with awatch-movement, a metal plate which is eemented upon the back side ofthe dial and is fittcd to and adapted to be secured upon themovementplate, substantially as and for the purpose specified. 7

lain dial, a metal plate which is secured to or upon its rear face andis adapted to be fittcd .over and attached to the movenent-plate of awatch, substantially as and for the purpose shown.

3. As an improvement in watches, a dialplate which is fittcd over andadapted to be secured upon the movement-plate of a watch, in combinationwith said movement-plate and with a vitrified, enameled, or porcelaindial that is cemented upon or attaehcd to the front side of saiddial-plate, substantially as and for the purpose set forth.

4. As an' improvement in watches, the eom bination of a vitrificd,enameled, or porcelain dial, a metal plate which is secured upon itsrear face, and a front novement-plate that is adapted to receivesaiddial-plate and to lavc the same attachcd thcreto, substantiall y asand for the purpose shown and described.

In testimony that I claim the foregoing I have hereunto set my hand this11th day of August, 1886.

GEORGE E. IIART.

witnesses:

GEO. S. PRINDLE, E. L. BRONSON.

